When Li Changqing brought Zhang Jiaye back to the hospital, Zhang Mingliang thought that Li Changqing was busy working on a nearby construction site.

After hearing that Li Changqing was suspended in a health center, Zhang Mingliang could probably guess that Li Changqing's identity was a village doctor, and when he saw Li Changqing driving a luxury car, although he felt strange, he didn't think much about it, how could he have expected that Li Changqing actually had a deep study of Chinese studies, mathematics, medicine, feng shui, etc., and was famous in Guyang County and even Wen'an City!

Zhang Mingliang looked around at Lijiaao Primary School, which was crowded with people, and all the available space was crowded with people.

When Li Changqing's figure appeared at the scene, the onlookers showed pilgrimage-like eyes, and Zhang Mingming's heart was a little nervous and expectant: "Looking at this posture, Mr. Li Changqing should be very powerful, Jiajia's illness may be saved!." ”

"Dad, you see Uncle Li is here!"

Zhang Jiaye stayed in Lijiaao Primary School for a day, much more cheerful than when he was in the hospital, pointing at Li Changqing and saying happily.

"Don't talk!"

After Li Changqing appeared, the originally noisy crowd immediately quieted down and became dignified and solemn, Zhang Mingliang was also infected by the surrounding atmosphere, stroking Zhang Jiaye's hair and telling him lovingly.

"Uh-huh!", Zhang Jiaye nodded obediently.

Li Changqing was very frank in reading, and read directly.

Zi said: "Liren is beautiful, choose not to be benevolent, how do you know?"

Zi said: "Those who are unkind cannot make appointments for a long time, and they cannot be happy." The benevolent are benevolent, and the knower is benevolent. ”

Zi said: "Only the benevolent can be a good person, and a wicked person can be a wicked person." ”

Zi said: "Gou Zhi is benevolent, and there is no evil." ”

......

From the "Liren" chapter in the Analects, it literally means that it is good to live with people who are benevolent. A person who is not virtuous cannot live in poverty for a long time, nor can he live in happiness for a long time. A benevolent person is content with benevolence, and a wise person is one who knows that benevolence is beneficial to oneself before doing so. Only those who are virtuous can love and hate others. If you are determined to be benevolent, you will not do bad things, and even when you are displaced, you will definitely do things according to benevolence!

In essence, benevolence is not an external dogma, but a person's home and destination.

People are physically close to benevolence out of their own nature, relying on benevolence and caring for benevolence rather than being a given, and practicing and maintaining benevolence in the current situation that is constantly repeated.

Nowadays, the traditional Chinese culture has been eroded and concealed, foreign cultures and trends of thought occupy the mainstream of society, and the Chinese nation has slowly lost its own foundation.

Zhang Mingliang heard Li Changqing's reading sound for the first time, completely immersed in the sound of books, and felt the meaning of every sentence Li Changqing read from the bottom of his heart, and he finally understood why in a world where everything comes first, Li Jiaao would give him a feeling like a peach blossom source.

It turned out that there was a master of Chinese culture who preached the teachings of the sages in the deep mountains and shepherded the pure land of benevolence.

Other listeners who often come to Li Jiaao to listen to Li Changqing's reading also have a deeper understanding of people and benevolence, and have found their original heart in the materialistic life.

Li Changqing finished reading, the audience left the venue in an orderly manner, Li Jiaao Primary School began classes, Li Changqing instructed Li Hongdou about the knowledge of traditional Chinese medicine in the health center, and gave Zhang Jiaye an injection to temporarily control the condition during the class, and only returned to Zhongnan Mountain after being busy, and took Li Changliang around the mountain to find a big stone that could race the sun to lie down and read, and supervise Li Changliang's reclamation work by the way.

Noon.

The weather is sunny, with blue sky and white clouds, green mountains and green waters.

After eating, Li Changqing went down the mountain and drove to Wen'an College, according to his agreement with Qiu Lexian, there was a class in the afternoon.

When Qiu Lexian hired Li Changqing, he mainly wanted to hang a signboard for the Department of Mathematics, so he assigned Li Changqing to the Department of Mathematics, and after seeing Li Changqing's level of Chinese studies, he wanted to transfer Li Changqing to the Department of Chinese, but he did not know Li Changqing's personal wishes, so he never spoke.

After Li Changqing arrived at Wen'an College, the classroom was arranged in the multi-functional lecture hall of the Department of Mathematics, which could accommodate two or three hundred students, but it was already overcrowded at this time.

Mainly for the junior and senior courses, many freshmen and sophomores came to the back of the classroom after hearing Li Changqing's speech at the opening ceremony, and even students from other colleges were also mixed in, and the scene was very hot.

Li Changqing taught students in the Department of Mathematics, and naturally he couldn't avoid Goldbach's conjecture.

He proved Goldbach's conjecture and made a major breakthrough in the field of number theory, and the Chinese Institute of Mathematics respected him as an authority in the field of number theory, and the teachers of the Department of Mathematics also sat in the front row, like students waiting for the teacher to give a lesson.

Li Changqing did not have a lesson plan, and directly wrote a theorem on the blackboard: when the integer n > 2, the equation x^n + y^n = z^n about x, y, z has no positive integer solution.

Only the teachers of the Department of Mathematics and some senior students understood that Li Changqing wrote the famous Fermat's theorem, and from the study of Fermat's theorem, a branch of algebraic number theory, was derived.

Li Changqing started from algebraic number theory, and explained the demonstration process of Fermat's theorem from shallow to deep.

When the analysis was fused, the students and teachers were inadvertently attracted by Li Changqing's language, followed Li Changqing's words to turn their thinking, and deduced the direction step by step.

For many people, math is boring and drowsy.

Even if they admired Li Changqing's name and came to the classroom to skip the class, it is estimated that they will all disperse in less than ten minutes.

But Li Changqing used Haoran righteousness when he was lecturing, and the whole classroom was quiet, and they all listened to Li Changqing attentively.

Mathematical formulas and symbols are rigid and rigid in textbooks and materials, and they are like bricks in Li Changqing's mouth, very three-dimensional, and demonstrating Fermat's theorem is like building a castle with bricks.

Li Changqing is like a brilliant architect, carrying out his work in an orderly manner.

"Bell ......"

When the bell rang for the end of class, Li Changqing was just drawing a dot at the end of the formula.

Fermat's Great Theorem Proof Complete!

After Fermat's theorem was proposed, it went through many conjectures and dialectics, and after more than 300 years of history, it was finally completely proved by the English mathematician Andrew Wiles in 1995.

With the help of various materials, they can barely see Andrew Wiles's proof process, but they will definitely not be able to lift weights like Li Changqing.

The eyes of those freshmen, sophomores, juniors, and seniors sparkled with an incredible look, and although they couldn't recount the proof process, or even let them see it for themselves, they still couldn't understand it, but they did understand the whole proof process just now!